Members of the New Bedford police narcotics and gang units arrested four people and took heroin, fentanyl, marijuana and oxycodone off the street Wednesday after executing three separate search warrants.

NEW BEDFORD _ Two men were arrested Wednesday on drug charges while aboard a fishing vessel in Buzzards Bay as a result of a port security operation with New Bedford Police Maritime Special Response Team, Massachusetts Environmental Police, the Department of Homeland Security and the New Bedford Pol…